Pressure regulator



May 24, 1932. c. W. HADDY PRESSURE REGULATOR Filed Sept. 20, 1929 gnou/woz Char/wW//addy Patented May 24, 1932 CHARLES W. HADDY, or NEW YORK, N. Y. f

PRESSUREv REGULATOR Applicatonled September 20, 1929. Serial No.` 393,967. i

The present invention relates generally to pressure-regulators adapted to maintain a desired pressure in steam boilers, more'particularly of the oil-burning class in which a variable quantity of oil is fed to the burners of the boiler corresponding to the required steam consumption.

In steamships and other power plants the boilers at times are subject to considerable variationin steam requirements, and where oil is used as fuel constant manual attention frequently becomes necessary to regulate the supply thereof to the burners in order to maintain uniform steam pressure.

- The objects of the invention include means actuated by the tendency of variation in boiler steam pressure to cause a correspond.- ing difference in the quantity of oil Asupplied to the .boiler whereby the steam pressure in the latter may automatically tend to remain constant.

A further object is to provide means for regulating the, steam pressure in the boiler.

Theobjects also include a pressure-regulator having its parts closely associated together to form a simplified construction and adapted to quickly respondto changes in steam pressure. y

For further comprehension of the invention, and of the objects and advantages thereof, reference is had to the following description and accompanying drawings, and to the appended claims in which the various features of the invention are more particularly pointed out. l

Referring to the drawings in which similar characters of reference designate like parts throughout the several views:

Figure 1 of the drawings diagrammatically illustrates in side elevation a steam boiler V'arranged with oil-feeding and pressure-regulating devices together with pipe connections therefor as embodied in the presi.. ent invention.

Figure 2 is an enlarged sectional view of the pressure-regulator that controls the steam supply from the boiler to the steamactuated oil-pump, the latter in turn regulating the quantity of oil fed to the burners of the boilerA whereby the steam pressure therein may be maintained.

As shownV in Fig.,1, numeral 10 indicates a steam-boiler provided with oil-burners 11 extending in usual manner into the fire-box of the boiler, the upper portion of thelatter having the steam-header 12. Asteam-actuated oil-pump is indicated generally at 13, and comprises a steam-cylinder 14 and an oilcylinder l5, `the pistonsof the cylinders being connected together by the rod 16. Also, between the steam-boiler and oil-pump is shown an oil-heater 17, and adjacent the oilpumpis disposed a pressure-regulator 18.

As shown in Fig. 2, the pressure-regulator comprises a casing 19, having at one end a detachable cap 20 provided in threaded relation with a hand-screw 21, the opposite endv of the casing being threaded to receive an auxiliary steam-connection `pipe 22. The

casing 19 is exteriorly provided with a Vvalvebody 23, having a screw-cap 24 formed with a conventional stuHing-box and gland through which passes the valve-stem 25, the latter carrying at its lower end a valve-disc 26 arranged in usual manner `to seat Vin the valve-body 23. The casing is also provided with a pair of spaced lugs 27, between which Y is mounted a lever 28 pivotally supported i-ntermediateits ends by a pin 29 carried by said lugs. At its outer end 3() the lever is connected by Va pivot-pin 31 to the upper end of the valve-stem 25. The inner end. 32 of the lever extends into the` casing 19 through a slot or passage 33formed in the side wall of the latter, the inner end of the lever being rounded and constituting an operating member for effecting the movement ofthe valve.

Within the casing 19 `is slidably rmounted a pistonl provided with the usual resilient rings 35 for maintainingaclosc sliding joint with the walls of the casing,and for additionally protecting the piston against leakage a leather cup-packing `36 is provided and secured to the lower endof the piston by the disc 37 and screw 38. `At its upper end the piston is formed with a centrally positionedtransverse slot 39, adapted to receive in a loose manner theinnerend- 32 of the lever 28.v Above the slot` 39 the piston is provided f introduced through the pipe 22. The move-` ments of the piston in opposite directions operate by its engagement with theinner end 32 of the lever 28 to correspondingly move the valve disc 26 through thestem 25 and leverarm 30, thus causing the spring action to open; the valve and the steam action to close it. Referring again to Fig. 1, theV steamheader 12 is provided with a valvecontrolled Y pipe 43 by means of which steam may be supplied for general use. A main fluid pressure supply pipe 44 also leads from the header 12 -to the steam cylinder 14 of the oil-pump13, and connected to the main pipe arey hand valves 45 and 46. Also, connected to the line pipe 44is a by-pass comprising pipes 47 and 48 having respective valves 49 'and 50, and on opening these latter valves and closing valve 45, the steam from the main pipe maypass through the valve-body 23 under control' of the pressure-regulator and' enter the' steamcylinder 14 through the valve 46 for the operation of theV oilecylinder. The auxiliary steam connection pipe 22 is provided with a stop valve and leads from the relatively large header or drum 12 into the bottom'of the pressure-regulator 18, and which portion of the regulator-casing in conjunction with the lower end of the piston34 constitutes an equalizing chamber 19a adapted to receive steam directly from the header, independv ently of the main steam supply pipe 44, which latter is subject to a flow ofsteam therethru of considerable movement,r while the steam pressure within the equalizing chamber is relatively quiet, acondition that affords a comparatively steady transmitting action through the piston to the controlling valve t of the main supply pipe 44. A steam exhaust pipe 51 provided `with a stop-valve 52 is lshown leading from .the steam cylinder 14, and leading to the oil-cylinder 15 of the oilpump 13 is a valve controlled oil-pipe 53 adapted to furnisha supply of oil from a con- 'venientV source, and leading fromfthe oilcylinder is a main oil feed pipe 54 extending to the oil-heater 17, and fromwhich point the feed-pipe continues to the burners 11 'of the boiler 10. Branch pipes 55 lead from the main pipe to the several burners, and for distributing oil thereto valves 56 are'provided for the branches. A stop-valve 57 is .provided for thefoil'feed line adjacent the boiler, and adjacent the oil-cylinder a valve Vburners of the boiler quickly responsive to any variation vof steam pressure, thus enabling the desired boiler pressure to be malntained. In its construction the combined regulatorand valve here shown consist of comparatively few-parts, readily assembled, or disconnected for repairs. By simply disconnecting a couple of pivot pinsthefop'erating 'lever may be withdrawn from thevalv'er and casing, and 'the 'several parts of'each quickly removed and replaced. For thispurpose no displacement of.pipeconnections-is required, a structuralarrangement'that lends itself to convenience and speed inithe several adjustments. Y 1 y Furthermore, the present construction pirovides for the early detection of'steaini'leakage past'the piston r'by allowing thelfree'escape of such leakage through the -passage '33 in the'casing, the upper end of the piston having aY wall' adapted to preventfthe escaping steam from entering the spring chamber section of the casing. and tending tot affect the resilience ofthe spring therein.-

I claim: 1. In a pressure regulator, a casing'having a passage extending throughr Aa"- sid'ewwallx thereof, a valve body projecting from said casing and having an extendingvalve stem, a piston slidable in said casing 1' and proi vided with anoperating sloty alined with said passage, and av leverV pivotally 'mlountedfon said valve body andhavingitsopposite vends respectively engaging in operative-""rel'a-- tion the walls of said piston'slot and' said valve stem. Y` l V 'i' 2." In a pressure regulator, Aacasing having af passage extending through asidelwall thereof, a valve body1projecti`ngfrom said casing and' having an extendiiigvalve Stem, a piston slidabl'e-in said casing and provided with an operating slot alined with'said pa'sit sage, a lever pivotally mountedon said' valve body and having its'opposite ends resp'ec# tively engaging in operative relation lthe' walls of said'piston slotand said valve stem, and a spring enclosed. within-said' casing cand arranged to effect a variablefcompressioii upon saidpiston. Signed at New York, in the countyof'NeW York and State of New York this lsixth da'yiof September VA. D. 1929.;

CHARLESW-=HADDY-=- viso' 

